CN102045764A - Method and device for adaptive retransmission of high speed uplink packet access - Google Patents
Method and device for adaptive retransmission of high speed uplink packet access Download PDFInfo
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- CN102045764A CN102045764A CN2009102055099A CN200910205509A CN102045764A CN 102045764 A CN102045764 A CN 102045764A CN 2009102055099 A CN2009102055099 A CN 2009102055099A CN 200910205509 A CN200910205509 A CN 200910205509A CN 102045764 A CN102045764 A CN 102045764A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/188—Time-out mechanisms
- H04L1/1883—Time-out mechanisms using multiple timers
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Abstract
The embodiment of the invention discloses a method and a device for adaptive retransmission of high speed uplink packet access, wherein the method comprises the following steps of: obtaining a restriction status of resources; performing adjustment judgment according to the restriction status of the resources and the current target retransmission times of users; and adjusting the target retransmission times of the users between the predetermined large target retransmission times and the predetermined small target retransmission times according to the result of the adjustment judgment, wherein the large target retransmission times are more than the small target retransmission times. The device comprises an obtaining unit, an adjustment judgment unit and an executing unit, wherein the obtaining unit is used for obtaining the restriction status of the resources; the adjustment judgment unit is used for performing the adjustment judgment according to the restriction status of the resources and the current target retransmission times of the users; and the executing unit is used for adjusting the target retransmission times of the users between the predetermined large target retransmission times and the predetermined small target retransmission times according to the result of the adjustment judgment. The invention can improve the resource utilization rate.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of high speed uplink packet and insert (HSUPA, High Speed Uplink Packet Access) adaptive retransmit method and device.
Background technology
Insert in (WCDMA, Wideband Code-Division Multiple Access) system in Wideband Code Division Multiple Access (WCDMA), introduced the HSUPA technology,, realized up high speed data transfer by series of key techniques.
In HSUPA, carry out service quality (QoS, Quality of Service) Kong Zhi method is: set fixing " target number of retransmissions " parameter, make professional average repeat time (NHR, Numberof HARQ Retransmissions) converge on this " target number of retransmissions ".
Repeating method used herein is hybrid automatic request retransmission (HARQ, Hybrid AutomaticRepeat reQuest), HARQ retransmit to use affirmation mechanism, its affirmation to reply/fail to reply (ACK/NACK) to do fast with the signal (signaling) of 1 bit and repays continually.
In research and practice process to prior art, the inventor finds that there is following problem in prior art: " target number of retransmissions " generally is fixed configurations in the prior art.In " target number of retransmissions " configuration hour, because the HARQ number of retransmissions is less, be in the lighter user of load of center of housing estate and sub-district of living in, its transmission rate can be along with the rapid raising of physical layer rate near or the speed that reaches capacity (being maximum, theoretical transmission rate).But to being in the user that the sub-district covers the edge, its transmitting power is limited easily, can't send bigger transmission block (TB, Transport Block) this moment under the less situation of HARQ number of retransmissions, and user's transmission rate can obviously descend, and influences user experience.In addition, for the heavier sub-district of load, user's transmission rate also can be subjected to load limitations and can not improve; If can dispose bigger " target number of retransmissions " this moment, improve power efficiency by obtaining diversity gain, still can improve user's transmission rate; As seen, less " target number of retransmissions " cell capacity of configuration also can be restricted.
When " target number of retransmissions " configuration is big, cause the user of transmit power limited or the higher user of load of sub-district of living in to being in covering edge, sub-district, because it is more that user's HARQ retransmits, can therefrom obtain diversity gain, thereby obtain higher power efficiency, promote these user's data quantity transmitted, also increased cell capacity simultaneously.But when cell load is light, being in its physical layer rate of user of center of housing estate can be approaching rapidly or reach maximum, theoretical transmission rate, but because HARQ retransmits morely, it is maximum that user's effective transmission speed but can not reach, and reduce at double with number of retransmissions, influence user's impression.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of high speed uplink packet and inserts adaptive retransmit method and device, can effectively improve the utilance of resource.
For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions:
The embodiment of the invention provides a kind of high speed uplink packet to insert adaptive retransmit method on the one hand, comprising:
Obtain the limited situation of resource;
Adjust judgement according to described resource-constrained situation and user's current goal number of retransmissions;
Result according to described adjustment judgement adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions;
Described general objective number of retransmissions is greater than described little target number of retransmissions.
On the other hand, provide a kind of high speed uplink packet to insert the self adaptation retransmission arrangement, having comprised:
Acquiring unit is used to obtain resource-constrained situation;
Adjust decision unit, the resource-constrained situation and the user's current goal number of retransmissions that are used for obtaining according to described acquiring unit are adjusted judgement;
Performance element is used for according to the result of described adjustment decision unit adjustment judgement user's target number of retransmissions being adjusted between predetermined general objective number of retransmissions and little target number of retransmissions; Described general objective number of retransmissions is greater than described little target number of retransmissions.
As can be seen from the above technical solutions, because can use the general objective number of retransmissions according to various resource-constrained situation decision still is little target number of retransmissions, can effectively be that different scenes are selected more suitable target number of retransmissions, effectively improve the utilance of resource.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that up-high speed upstream packet provided by the invention inserts adaptive retransmit method embodiment one flow chart;
Fig. 2 is that up-high speed upstream packet provided by the invention inserts adaptive retransmit method embodiment two flow charts;
Fig. 3 is that up-high speed upstream packet provided by the invention inserts adaptive retransmit method embodiment three flow charts;
Fig. 4 is that up-high speed upstream packet provided by the invention inserts adaptive retransmit method embodiment four flow charts;
Fig. 5 is that up-high speed upstream packet provided by the invention inserts self adaptation retransmission arrangement example structure figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of high speed uplink packet to insert adaptive retransmit method and device, can effectively improve the utilance of resource.
The high speed uplink packet that the embodiment of the invention provides inserts adaptive retransmit method and comprises:
Obtain the resource-constrained situation of various resources;
Adjust judgement according to described resource-constrained situation;
Result according to described adjustment judgement adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions;
Described general objective number of retransmissions is greater than described little target number of retransmissions.
Because can use the general objective number of retransmissions according to various resource-constrained situation decision still is little target number of retransmissions, can effectively be that different scenes are selected more suitable target number of retransmissions, has effectively improved the utilance of resource.
Wherein resource-constrained situation is relevant with the adjustment of target number of retransmissions, specifically can comprise: the limited situation of the load of sub-district, UE transmit power limited situation, the limited situation of UE physical capability and/or the resource-constrained situation of Channel Elements (CE).
High speed uplink packet provided by the invention inserts among the adaptive retransmit method embodiment one, adjusts according to the limited situation of the load of sub-district, and Fig. 1 is that high speed uplink packet provided by the invention inserts adaptive retransmit method embodiment one flow chart, comprising:
101, obtain the reception total bandwidth power of sub-district.
Obtain that the sub-district reports, through certain filtered reception total bandwidth power (RTWP, ReceivedTotal Wideband Power).
102, determine the limited situation of load of this sub-district according to the reception total bandwidth power of sub-district.
The method of obtaining can be default RTWP thresholding, and the RTWP of sub-district is compared with the RTWP thresholding, if be higher than predetermined RTWP thresholding, thinks that then the load of this user sub-district of living in is limited; If be lower than predetermined RTWP thresholding, think that then the load of this user sub-district of living in is not limited.
Further, in order to prevent ping-pong phenomenon, the limited situation of load that prevents the sub-district changes before limited and not limited too frequent, can adopt two RTWP thresholdings to be used as Rule of judgment, predetermined RTWP Upper threshold, a RTWP Lower Threshold, this RTWP Upper threshold is higher than the RTWP Lower Threshold, if the RTWP of sub-district is higher than predetermined Upper threshold, think that then the load of this user sub-district of living in is limited; If the RTWP of sub-district is lower than predetermined Lower Threshold, think that then the load of this user sub-district of living in is not limited, if between this RTWP Upper threshold and RTWP Lower Threshold, then do not change the load constrained state of sub-district, if be the load constrained state of sub-district limited then still remain limited, if not limited still remain not limited.
103, adjust judgement according to the limited situation of the load resource of sub-district and user's current goal number of retransmissions.
Can be Event triggered the opportunity of carrying out this step; Also can be to trigger in the cycle, promptly when arriving the scheduled time, adjust judgement according to described resource-constrained situation.
When transmission rate is identical, because " general objective number of retransmissions " is different to the contribution of RTWP with " little target number of retransmissions " under the identical traffic rate behavior, the user of a plurality of use general objective number of retransmissions is adjusted into the little target number of retransmissions of use at short notice, might make the RTWP of system too high, load is overweight, therefore when practical application, preferably, a plurality of users in sub-district should not carry out the adjustment of " target number of retransmissions " simultaneously, otherwise can cause the RTWP fluctuation bigger and unstable, and ping-pong phenomenon takes place easily.Based on such consideration, can preferentially adopt the periodic triggers mode---trigger with the long cycle, both can drop to the number of retransmissions adjustment to the influence of RTWP minimumly, also can reduce the number of times that table tennis takes place, reduce consumption simultaneously system resource.
When adopting the cycle during trigger mechanism, may have the regularization condition that a plurality of users satisfy large and small target number of retransmissions simultaneously, but a plurality of users in sub-district should not adjust simultaneously again, so the time can also further consider the ordering rule of adjustment.The ordering rule of adjusting judgement in the present embodiment is mainly considered following one or more factors:
First kind, the user that is in cell edge can preferentially be adjusted to " general objective number of retransmissions ".Because these users are easier of reduction of speed even call drop, allow them use " general objective number of retransmissions ", can more effectively promote user's data quantity transmitted, obtain higher power efficiency, objectively also can increase cell capacity simultaneously.
Second kind, since " little target number of retransmissions " under the effective speed maximum higher, so high-priority users should preferentially be used " little target number of retransmissions "; On the contrary, low priority user should preferentially use " general objective number of retransmissions ".
The third, can utilize the ordering rule of dispatching algorithm to sort.From " little target number of retransmissions " when adjusting to " general objective number of retransmissions ", for the effective speed that makes the user remains on original level at least, its transmission block needs to increase rapidly, so should be according to the sortord of dispatching algorithm raising speed, coming needs the user of furnishing " general objective number of retransmissions " to sort to these; Otherwise, should adopt the sortord of dispatching algorithm reduction of speed when from " general objective number of retransmissions " to " little target number of retransmissions ", come needing user's ordering of the little target number of retransmissions of furnishing.
These factors can consider separately that consideration also can combine; If take into consideration, can for example at first consider first kind according to certain priority orders, second kind then, once more the third; The embodiment of the invention does not limit this.
104, according to the result who adjusts judgement user's target number of retransmissions is adjusted between predetermined general objective number of retransmissions and little target number of retransmissions.
If the load of user sub-district of living in is limited, and what the user used at present is little target number of retransmissions, use the target number of retransmissions of default general objective number of retransmissions according to adjusting court verdict as UE, because cell load is limited, user rate also can be restricted, can not obtain to promote, and uses this moment bigger target number of retransmissions to retransmit, can obtain diversity gain, thereby the raising power efficiency promotes user's transmission rate and cell transmission speed, promotes cell capacity.
If the load of user sub-district of living in is not limited, and what the user used at present is the general objective number of retransmissions, use the target number of retransmissions of default little target number of retransmissions according to adjusting court verdict as UE, at this moment, the load of user sub-district of living in is not limited, be that load is lighter, use effective speed that less target number of retransmissions can make the user with the rapid lifting of physical layer rate the approaching or speed that reaches capacity, thereby promote user experience greatly.
High speed uplink packet provided by the invention inserts adaptive retransmit method embodiment one can regulate the target number of retransmissions according to the loading condition of sub-district, can effectively improve the utilance of resource.
High speed uplink packet provided by the invention inserts among the adaptive retransmit method embodiment two, adjusts according to UE transmit power limited situation, and Fig. 2 is that high speed uplink packet provided by the invention inserts adaptive retransmit method embodiment two flow charts, comprising:
201, obtain UE transmit power limited situation.
Have two kinds of methods can be used for judging whether the transmitting power of UE is limited:
Whether the transmitting power that first kind, the 6A incident that reports according to UE and 6B incident are judged UE is limited, the transmitting power of measuring as UE can report the 6A incident when continuing for some time and being higher than certain thresholding, the transmit power limited of expression UE then can report the transmitting power of 6B incident UE not limited when transmitting power continues to be lower than another thresholding.
Second kind, be the UE transmitting power free space (UPH that reports according to UE, UE transmissionPower Headroom) measured value judges whether the transmitting power of UE is limited, the UPH that UE reports has indicated the transmitting power size of UE current residual, can obtain the transmitting power size of the current use of UE by contrast with maximum transmission power, whether limited with the predetermined electric power thresholding if comparing the transmitting power that can judge UE again for the UE transmitting power, it is to represent that the transmitting power of UE is not limited that the UE transmitting power is lower than the predetermined electric power thresholding, and the UE transmitting power is higher than the transmit power limited that the predetermined electric power thresholding is expression UE.
202, adjust judgement according to UE transmit power limited situation.
Adjust judgement according to UE transmit power limited situation, whether decision is adjusted user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, and default general objective number of retransmissions is greater than little target number of retransmissions.
Use general objective number of retransmissions condition in the present embodiment, can be the UE transmit power limited, the little target number of retransmissions of predetermined use condition can be not limited for the UE transmitting power.Promptly in the UE transmit power limited, and the user use at present be little target number of retransmissions the time, the result who adjusts judgement is for to adjust to the general objective number of retransmissions with the target number of retransmissions of UE by little target number of retransmissions; Not limited in the UE transmitting power, and the user use at present be the general objective number of retransmissions time, the result who adjusts judgement is for to adjust to little target number of retransmissions with the target number of retransmissions of UE by the general objective number of retransmissions.
Can be Event triggered the opportunity of carrying out this step, also can be to trigger in the cycle, and the implementation when the employing cycle triggers can be with reference to the description in the step 103 above.
203, according to the result who adjusts judgement user's target number of retransmissions is adjusted between predetermined general objective number of retransmissions and little target number of retransmissions.
If UE transmit power limited, and what the user used at present is little target number of retransmissions, use the target number of retransmissions of default general objective number of retransmissions according to adjusting court verdict as UE, retransmit by more HARQ this moment, therefrom obtain diversity gain, improve power efficiency, thereby reduce demand, finally promote this user's transmission rate transmitting power.
Generally speaking, the user who is in cell edge is easy to transmit power limited, allows these users use default general objective number of retransmissions to retransmit as the target number of retransmissions, can improve user's transmission rate, increases the sub-district and covers.
If the UE transmitting power is not limited, and what the user used at present is the general objective number of retransmissions, use the target number of retransmissions of default little target number of retransmissions according to adjusting court verdict as UE, this moment is because the UE transmitting power is no longer limited, use less target number of retransmissions can make the approaching or speed that reaches capacity of its effective speed, thereby promote user experience greatly.
High speed uplink packet provided by the invention inserts adaptive retransmit method embodiment two can regulate the target number of retransmissions according to UE transmit power limited situation, can effectively improve the utilance of resource.
High speed uplink packet provided by the invention inserts among the adaptive retransmit method embodiment three, adjusts according to the resource-constrained situation of Channel Elements, and Fig. 3 is that high speed uplink packet provided by the invention inserts adaptive retransmit method embodiment three flow charts, comprising:
301, obtain the resource-constrained situation of Channel Elements.
Whether the method for obtaining the resource-constrained situation of Channel Elements is similar with the limited situation method of load of obtaining the sub-district, can adopt the method judgement Channel Elements resource of predetermined threshold limited.
The employing simple gate is scheduled to a Channel Elements CE number thresholding in limited time, and the total CE number that uses is compared with CE number thresholding, if be higher than predetermined CE number thresholding, thinks that then Channel Elements is resource-constrained; If be lower than predetermined CE number thresholding, think that then the Channel Elements resource is not limited.
When adopting double threshold, predetermined CE number Upper threshold, a CE number Lower Threshold, this CE number Upper threshold if total CE number is higher than predetermined Upper threshold, think then that Channel Elements is resource-constrained greater than CE number Lower Threshold; If total CE number is lower than predetermined Lower Threshold, think that then the Channel Elements resource is not limited, if total CE number is between CE number Upper threshold and CE number Lower Threshold, then do not change the resource-constrained situation of Channel Elements, promptly before for limited then continue as limited, before for not limited then continue as not limited.
302, adjust judgement according to the resource-constrained situation of Channel Elements.
Adjust judgement according to the limited situation of Channel Elements resource power, whether decision is adjusted user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, and default general objective number of retransmissions is greater than little target number of retransmissions.
In the present embodiment when Channel Elements is resource-constrained, the result who adjusts judgement is that select present use is the user of general objective number of retransmissions, described user's target number of retransmissions is adjusted to little target number of retransmissions by the general objective number of retransmissions, promptly when Channel Elements is resource-constrained, select UE the target number of retransmissions that adopts is adjusted to " little target number of retransmissions " from " general objective number of retransmissions ", be not limited as up to the Channel Elements resource and end.
Can be Event triggered the opportunity of carrying out this step, also can be to trigger in the cycle, and the implementation when the employing cycle triggers can be with reference to the description in the step 103 above.
Further, in any embodiment provided by the invention, the result who adjusts judgement is when described user's target number of retransmissions is adjusted to the general objective number of retransmissions by little target number of retransmissions, can go to judge whether described Channel Elements resource is limited, if the Channel Elements resource is not limited, the result according to described adjustment judgement adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions again
303, according to the result who adjusts judgement user's target number of retransmissions is adjusted between predetermined general objective number of retransmissions and little target number of retransmissions.
When Channel Elements is resource-constrained, pick out the UE of use " general objective number of retransmissions ", use the target number of retransmissions of default little target number of retransmissions as the UE that picks out according to adjusting court verdict, the UE that is selected uses default little target number of retransmissions to retransmit as the target number of retransmissions.
Further, during the limited situation of the load of reference cell, can pay the utmost attention to the limited situation of load of sub-district, at the same time if cell load is very high, even CE is limited, does not need to select UE yet the target number of retransmissions that adopts is adjusted to " little target number of retransmissions " from " general objective number of retransmissions ".Because user's power efficiency is more important than CE efficient under the high capacity, though the CE efficient of using " general objective number of retransmissions " low than " little target number of retransmissions ", the power efficiency of " general objective number of retransmissions " is obviously higher; So the time need to keep " general objective number of retransmissions " user " target number of retransmissions ", to keep the higher transmission rate in sub-district.The power efficiency here can be understood as, user's transmission rate that unit power can be carried; In like manner, CE efficient refers to user's transmission rate that the per channel element resources provides.
High speed uplink packet provided by the invention inserts adaptive retransmit method embodiment three can regulate the target number of retransmissions according to the resource-constrained situation of Channel Elements, can effectively improve the utilance of resource.
High speed uplink packet provided by the invention inserts among the adaptive retransmit method embodiment four, adjusts according to the limited situation of UE physical capability, and Fig. 4 is that high speed uplink packet provided by the invention inserts adaptive retransmit method embodiment four flow charts, comprising:
401, obtain the limited situation of UE physical capability.
Use default general objective number of retransmissions to retransmit at UE as the target number of retransmissions, and the transmission block that uses has reached the maximum of agreement regulation, it is almost full rate transmission of physical layer, this moment, its effective speed can not promote again, so think that this UE physical capability is limited, otherwise think that the UE physical capability is not limited.
402, adjust judgement according to the limited situation of UE physical capability.
When the UE physical capability was limited, if this UE uses default general objective number of retransmissions to retransmit as the target number of retransmissions always, user's transmission rate was limited always, and finally caused the fairness differentiation variation between the user, influenced user experience.
So present embodiment, limited at the UE physical capability, and the user uses at present when being the general objective number of retransmissions, the result who adjusts judgement is for being adjusted to " general objective number of retransmissions " " little target number of retransmissions ", to reduce the HARQ number of retransmissions, improve efficiency of transmission, thereby promote the transmission rate of UE; Adjust court verdict if the UE physical capability is not limited for not changing UE current target number of retransmissions.
Can be Event triggered the opportunity of carrying out this step, also can be to trigger in the cycle, and the implementation when the employing cycle triggers can be with reference to the description in the step 103 above.
403, according to the result who adjusts judgement user's target number of retransmissions is adjusted between predetermined general objective number of retransmissions and little target number of retransmissions.
If the UE physical capability is limited, and what the user used at present is the general objective number of retransmissions, uses the target number of retransmissions of default little target number of retransmissions as UE according to adjusting court verdict, to reduce the HARQ number of retransmissions, improve efficiency of transmission, thereby promote the transmission rate of UE.
High speed uplink packet provided by the invention inserts adaptive retransmit method embodiment four can regulate the target number of retransmissions according to the limited situation of UE physical capability, can effectively improve the utilance of resource.
Above high speed uplink packet inserts adaptive retransmit method embodiment one, two, three, four respectively at the limited situation of the load of sub-district, UE transmit power limited situation, the resource-constrained situation of Channel Elements, the limited situation of UE physical capability is described, further, system is the limited situation of load of reference cell simultaneously, UE transmit power limited situation, the resource-constrained situation of limited situation of UE physical capability and/or Channel Elements is regulated the target number of retransmissions, the priority of these four kinds of limited situations can be arranged according to actual conditions, for example, can be with the limited situation priority of the load of sub-district for the highest, when the load of sub-district is limited, keep using default general objective number of retransmissions to retransmit as the target number of retransmissions.
Further, because the maximum effective speed that " general objective number of retransmissions " supported will be starkly lower than " little target number of retransmissions ", adjust back user's speed and can not reduce in order to guarantee " target number of retransmissions ", be adjusted to " general objective number of retransmissions " before at the target number of retransmissions that uses by UE by " little target number of retransmissions ", its effective speed should be lower than certain thresholding, for example is lower than the hump speed of using the general objective number of retransmissions to retransmit; If be higher than the hump speed of using the general objective number of retransmissions to retransmit, then do not adjust, continue to use " little target number of retransmissions " to retransmit, with the effective speed of preferential assurance UE.
Simultaneously, because the signal-to-interference ratio (SIR of " general objective number of retransmissions " and " little target number of retransmissions ", Signal-to-Interference Ratio) working point generally can be different, so when a user adjusts between " general objective number of retransmissions " and " little target number of retransmissions ", need to increase some special processings with quickening power control convergence of algorithm speed, thereby make average repeat time can converge on new " target number of retransmissions " rapidly.The method here comprises two kinds: a kind of is convergent-divergent sir target value, makes the later SIR of big or small target number of retransmissions adjustment to start working from more approaching new SIR working point; Another kind is to adjust hybrid heavily referring to automatically to ask (HARQ, Hybrid Automatic Repeat reQuest) power bias (PO, Power Offset), enhancing Dedicated Physical Data Channel (E-DPDCH can be raised or reduce to this method rapidly after the number of retransmissions adjustment, Enhanced Dedicated Physical Data Channel) transmitting power, thereby make professional average repeat time to change rapidly, and converge on new " target number of retransmissions " quickly.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out
A kind of high speed uplink packet inserts adaptive retransmit method, comprising:
Obtain the limited situation of resource;
Adjust judgement according to described resource-constrained situation and user's current goal number of retransmissions;
Result according to described adjustment judgement adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions;
Described general objective number of retransmissions is greater than described little target number of retransmissions.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The high speed uplink packet that the embodiment of the invention provides inserts the self adaptation retransmission arrangement and can be realized by the equipment of network side, for example base station (NodeB), radio network controller (RNC, Radio NetworkController) etc., its structure comprises as shown in Figure 5:
Acquiring unit 501 is used to obtain resource-constrained situation;
Adjust decision unit 502, the resource-constrained situation and the user's current goal number of retransmissions that are used for obtaining according to described acquiring unit 501 are adjusted judgement;
When resource-constrained situation was the limited situation of load of sub-district, acquiring unit 501 comprised:
First acquiring unit, be used for the reception total bandwidth power of sub-district is compared with default reception total bandwidth power thresholding, if the reception total bandwidth power of described sub-district is higher than default reception total bandwidth power thresholding, think that then the load of described user sub-district of living in is limited, if the reception total bandwidth power of described sub-district is lower than default reception total bandwidth power thresholding, think that then the load of described user sub-district of living in is not limited;
Or, second acquisition unit, be used for the reception total bandwidth power of sub-district is compared with default reception total bandwidth power thresholding, if the reception total bandwidth power of described sub-district is higher than default reception total bandwidth power Upper threshold, think that then the load of described user sub-district of living in is limited, if the reception total bandwidth power of described sub-district is lower than default reception total bandwidth power Lower Threshold, think that then the load of described user sub-district of living in is not limited.
Adjusting decision unit 502 comprises:
First adjusts decision unit, be used in the load of user sub-district of living in limited, and the user uses at present when being little target number of retransmissions, and the result who adjusts judgement is for to adjust to the general objective number of retransmissions with user's target number of retransmissions by described predetermined little target number of retransmissions; And/or
Load in user sub-district of living in is not limited, and the user use at present be the general objective number of retransmissions time, the result who adjusts judgement is for to adjust to little target number of retransmissions with user's target number of retransmissions by described predetermined general objective number of retransmissions.
When resource-constrained situation was the limited situation of user emission power, acquiring unit 501 comprised:
The 3rd acquiring unit, whether the transmitting power that is used for judging the user according to the 6A incident and the 6B incident of reporting of user is limited;
Or, the 4th acquiring unit, be used for obtaining by the user emission power free space of reporting of user the transmitting power size of the current use of described user, whether the transmitting power of the current use of described user size and predetermined electric power thresholding are compared the transmitting power of judging the user limited.
Described adjustment decision unit 502 comprises:
Second adjusts decision unit, be used at described user emission power limited, and described user uses at present when being little target number of retransmissions, and the result who adjusts judgement is for to adjust to the general objective number of retransmissions with described user's target number of retransmissions by little target number of retransmissions; And/or
Not limited at described user emission power, and described user use at present be the general objective number of retransmissions time, the result who adjusts judgement is for to adjust to little target number of retransmissions with described user's target number of retransmissions by the general objective number of retransmissions.
When resource-constrained situation was the resource-constrained situation of Channel Elements, acquiring unit 501 comprised:
The 5th acquiring unit, the total CE number that is used for using is compared with default CE number thresholding, if described total CE number is higher than default CE number thresholding, think that then described Channel Elements is resource-constrained, if described total CE number is lower than default CE number thresholding, think that then described Channel Elements resource is not limited;
Or, the 6th acquiring unit, be used for total CE number is compared with default CE number thresholding, if described total CE number is higher than default CE number Upper threshold, think that then described Channel Elements is resource-constrained, if described total CE number is lower than default CE number Lower Threshold, think that then described Channel Elements resource is not limited.
Described adjustment decision unit 502 comprises:
The 3rd adjusts decision unit, be used for the Channel Elements resource when Channel Elements is resource-constrained, the result who adjusts judgement is that select present use is the user of general objective number of retransmissions, and described user's target number of retransmissions is adjusted to little target number of retransmissions by the general objective number of retransmissions.
When resource-constrained situation was the resource-constrained situation of Channel Elements, acquiring unit 501 comprised:
The 7th acquiring unit, be used for using default general objective number of retransmissions to retransmit as the target number of retransmissions the user, and physical layer is almost during full rate, its effective speed can not promote again, think that described user's physical capability is limited this moment, otherwise think that described user's physical capability is not limited.
Described adjustment decision unit 502 comprises:
The 4th adjusts decision unit, be used at user's physical capability limited, and described user use at present be the general objective number of retransmissions time, the result who adjusts judgement is for to adjust to little target number of retransmissions with described user's target number of retransmissions by the general objective number of retransmissions; And/or
When described user's physical capability is not limited, adjust court verdict for not changing described user's current target number of retransmissions.
Further, high speed uplink packet access self adaptation retransmission arrangement can also comprise:
Judging unit, the result who is used in described adjustment decision unit adjustment judgement is when described user's target number of retransmissions is adjusted to the general objective number of retransmissions by little target number of retransmissions, judge whether described Channel Elements resource is limited, if described Channel Elements resource is not limited, controls described performance element again and user's target number of retransmissions is adjusted between predetermined general objective number of retransmissions and little target number of retransmissions according to the result of described adjustment judgement.
Further, because the maximum effective speed that " general objective number of retransmissions " supported will be starkly lower than " little target number of retransmissions ", adjust back user's speed and can not reduce in order to guarantee " target number of retransmissions ", be adjusted to " general objective number of retransmissions " before at the target number of retransmissions that uses by UE by " little target number of retransmissions ", its effective speed should be lower than certain thresholding, for example be lower than the hump speed of using the general objective number of retransmissions to retransmit, if be higher than the hump speed of using the general objective number of retransmissions to retransmit, then do not adjust, continue to use " little target number of retransmissions " to retransmit, with the effective speed of preferential assurance UE.Therefore high speed uplink packet access self adaptation retransmission arrangement can also comprise:
Comparing unit, the adjustment court verdict that is used at described adjustment decision unit 502 is when described user's target number of retransmissions is adjusted to the general objective number of retransmissions by described predetermined little target number of retransmissions, described user's effective speed is compared with the thresholding of being scheduled to, if described user's effective speed is higher than predetermined thresholding, then notify described performance element 503 not change described user's target number of retransmissions.
Further, high speed uplink packet access self adaptation retransmission arrangement can also comprise:
The first convergence process unit is used for when the result that described performance element 503 is adjudicated according to described adjustment adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, and scale signal is to the interference ratio desired value;
And/or, the second convergence process unit, be used for when the result that described performance element 503 is adjudicated according to described adjustment adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, adjusting hybrid heavily referring to automatically and asking power bias.
The concrete operation method of the high speed uplink packet access self adaptation retransmission arrangement that the embodiment of the invention provides can insert the description of adaptive retransmit method with reference to the high speed uplink packet that above embodiment of the invention is provided, and no longer repeats at this.
More than a kind of high speed uplink packet provided by the present invention is inserted adaptive retransmit method and device is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (17)
1. a high speed uplink packet inserts adaptive retransmit method, it is characterized in that, comprising:
Obtain the limited situation of resource;
Adjust judgement according to described resource-constrained situation and user's current goal number of retransmissions;
Result according to described adjustment judgement adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions;
Described general objective number of retransmissions is greater than described little target number of retransmissions.
2. the method for claim 1, it is characterized in that, adjusting judgement according to described resource-constrained situation and user's current goal number of retransmissions comprises: when arriving the scheduled time, adjust judgement according to described resource-constrained situation and user's current goal number of retransmissions.
3. the method for claim 1 is characterized in that, describedly adjusts judgement according to described resource-constrained situation and user's current goal number of retransmissions and comprises that following three kinds are adjusted at least a of judgement modes:
Adjust judgement according to described resource-constrained situation and user's current goal number of retransmissions, the target number of retransmissions that preferentially will cover limited users is adjusted into predetermined general objective number of retransmissions;
Adjust judgement according to described resource-constrained situation and user's current goal number of retransmissions, described adjustment court verdict for user's target number of retransmissions when predetermined general objective number of retransmissions is adjusted into little target number of retransmissions, priority according to consumer premise, preferentially the general objective number of retransmissions with high-priority users is adjusted into predetermined little target number of retransmissions, described adjustment court verdict for user's target number of retransmissions when predetermined little target number of retransmissions is adjusted into the general objective number of retransmissions, according to the priority of consumer premise, preferentially the little target number of retransmissions with low priority user is adjusted into predetermined general objective number of retransmissions;
Adjust judgement according to described resource-constrained situation and user's current goal number of retransmissions, with user's target number of retransmissions when described predetermined little target number of retransmissions is adjusted to the general objective number of retransmissions, according to the sortord of dispatching algorithm raising speed, the user who needs furnishing general objective number of retransmissions is sorted; With user's target number of retransmissions when described predetermined general objective number of retransmissions is adjusted to little target number of retransmissions, according to the sortord of dispatching algorithm reduction of speed, come needing user's ordering of the little target number of retransmissions of furnishing.
4. the method for claim 1 is characterized in that, described method also comprises:
After carrying out described adjustment judgement, at described adjustment court verdict is when described user's target number of retransmissions is adjusted to the general objective number of retransmissions by described predetermined little target number of retransmissions, described user's effective speed is compared with the thresholding of being scheduled to, if described user's effective speed is higher than predetermined thresholding, then do not change described user's target number of retransmissions.
5. the method for claim 1 is characterized in that, described method also comprises:
When the result according to described adjustment judgement adjusted user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, scale signal was to the interference ratio desired value;
Or, when the result according to described adjustment judgement adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, adjust hybrid heavily referring to automatically and ask power bias.
6. as claim 1,2,3,4 or 5 described methods, it is characterized in that the limited situation of load that described resource-constrained situation is the sub-district;
Describedly obtain resource-constrained situation and comprise:
The reception total bandwidth power of sub-district is compared with default reception total bandwidth power thresholding, if the reception total bandwidth power of described sub-district is higher than default reception total bandwidth power thresholding, think that then the load of described user sub-district of living in is limited, if the reception total bandwidth power of described sub-district is lower than default reception total bandwidth power thresholding, think that then the load of described user sub-district of living in is not limited;
Or, the reception total bandwidth power of sub-district is compared with default reception total bandwidth power thresholding, if the reception total bandwidth power of described sub-district is higher than default reception total bandwidth power Upper threshold, think that then the load of described user sub-district of living in is limited, if the reception total bandwidth power of described sub-district is lower than default reception total bandwidth power Lower Threshold, think that then the load of described user sub-district of living in is not limited; Described reception total bandwidth power Upper threshold is higher than described reception total bandwidth power Lower Threshold.
7. method as claimed in claim 6 is characterized in that, describedly adjusts judgement according to described resource-constrained situation and user's current goal number of retransmissions and comprises:
Load in user sub-district of living in is limited, and the user use at present be little target number of retransmissions the time, the result who adjusts judgement is for to adjust to the general objective number of retransmissions with user's target number of retransmissions by described predetermined little target number of retransmissions; Or
Load in user sub-district of living in is not limited, and the user use at present be the general objective number of retransmissions time, the result who adjusts judgement is for to adjust to little target number of retransmissions with user's target number of retransmissions by described predetermined general objective number of retransmissions.
8. as claim 1,2,3,4 or 5 described methods, it is characterized in that described resource-constrained situation is the limited situation of user emission power;
Describedly obtain resource-constrained situation and comprise:
Whether limited according to the transmitting power that the 6A incident and the 6B incident of reporting of user are judged the user;
Or, obtain the transmitting power size of the current use of described user by the user emission power free space of reporting of user, whether the transmitting power of the current use of described user size and predetermined electric power thresholding are compared the transmitting power of judging the user limited.
9. method as claimed in claim 8 is characterized in that, describedly adjusts judgement according to described resource-constrained situation and user's current goal number of retransmissions and comprises:
Limited at described user emission power, and described user use at present be little target number of retransmissions the time, the result who adjusts judgement is for to adjust to the general objective number of retransmissions with described user's target number of retransmissions by little target number of retransmissions; Or
Not limited at described user emission power, and described user use at present be the general objective number of retransmissions time, the result who adjusts judgement is for to adjust to little target number of retransmissions with described user's target number of retransmissions by the general objective number of retransmissions.
10. as claim 1,2,3,4 or 5 described methods, it is characterized in that described resource-constrained situation is the resource-constrained situation of Channel Elements;
Describedly obtain resource-constrained situation and comprise:
The total channel number of unit of using is compared with default Channel Elements number thresholding, if described total channel number of unit is higher than default Channel Elements number thresholding, think that then described Channel Elements is resource-constrained, if described total channel number of unit is lower than default Channel Elements number thresholding, think that then described Channel Elements resource is not limited;
Or, the total channel number of unit is compared with default Channel Elements number thresholding, if described total channel number of unit is higher than default Channel Elements number Upper threshold, think that then described Channel Elements is resource-constrained, if described total channel number of unit is lower than default Channel Elements number Lower Threshold, think that then described Channel Elements resource is not limited.
11. method as claimed in claim 10 is characterized in that, describedly adjusts judgement according to described resource-constrained situation and user's current goal number of retransmissions and comprises:
When Channel Elements was resource-constrained, the result who adjusts judgement was the user that to select present target number of retransmissions be the general objective number of retransmissions, and described user's target number of retransmissions is adjusted to little target number of retransmissions by the general objective number of retransmissions.
12. method as claimed in claim 11 is characterized in that, described method also comprises:
Result in described adjustment judgement is when described user's target number of retransmissions is adjusted to the general objective number of retransmissions by little target number of retransmissions, judge whether described Channel Elements resource is limited, if described Channel Elements resource is not limited, the result according to described adjustment judgement adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions again.
13., it is characterized in that described resource-constrained situation is the limited situation of user's physical capability as claim 1,2,3,4 or 5 described methods;
Describedly obtain resource-constrained situation and comprise:
Use default general objective number of retransmissions to retransmit the user as the target number of retransmissions, and physical layer is almost during full rate, its effective speed can not promote again, and think that described user's physical capability is limited this moment, otherwise think that described user's physical capability is not limited.
14. method as claimed in claim 13 is characterized in that, describedly adjusts judgement according to described resource-constrained situation and user's current goal number of retransmissions and comprises:
Limited at user's physical capability, and described user use at present be the general objective number of retransmissions time, the result who adjusts judgement is for to adjust to little target number of retransmissions with described user's target number of retransmissions by the general objective number of retransmissions; Or
When described user's physical capability is not limited, adjust court verdict for not changing described user's current target number of retransmissions.
15. a high speed uplink packet inserts the self adaptation retransmission arrangement, it is characterized in that, comprising:
Acquiring unit is used to obtain resource-constrained situation;
Adjust decision unit, the resource-constrained situation and the user's current goal number of retransmissions that are used for obtaining according to described acquiring unit are adjusted judgement;
Performance element is used for according to the result of described adjustment decision unit adjustment judgement user's target number of retransmissions being adjusted between predetermined general objective number of retransmissions and little target number of retransmissions; Described general objective number of retransmissions is greater than described little target number of retransmissions.
16. device as claimed in claim 15 is characterized in that, described device also comprises:
Comparing unit, the adjustment court verdict that is used at described adjustment decision unit is when described user's target number of retransmissions is adjusted to the general objective number of retransmissions by described predetermined little target number of retransmissions, described user's effective speed is compared with the thresholding of being scheduled to, if described user's effective speed is higher than predetermined thresholding, the target number of retransmissions of then notifying described performance element not change described user.
17. device as claimed in claim 15 is characterized in that, described device also comprises:
The first convergence process unit is used for when the result that described performance element is adjudicated according to described adjustment adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, and scale signal is to the interference ratio desired value;
And/or, the second convergence process unit, be used for when the result that described performance element is adjudicated according to described adjustment adjusts user's target number of retransmissions between predetermined general objective number of retransmissions and little target number of retransmissions, adjusting hybrid heavily referring to automatically and asking power bias.
Priority Applications (4)
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|---|---|---|---|
| CN200910205509.9A CN102045764B (en) | 2009-10-20 | 2009-10-20 | Method and device for adaptive retransmission of high speed uplink packet access |
| PCT/CN2010/077762 WO2011047606A1 (en) | 2009-10-20 | 2010-10-15 | Method and device for adaptive retransmission of high speed uplink packet access |
| EP10824447.6A EP2493107B1 (en) | 2009-10-20 | 2010-10-15 | Method and device for adaptive retransmission of high speed uplink packet access |
| US13/449,967 US8902918B2 (en) | 2009-10-20 | 2012-04-18 | High speed uplink packet access adaptive retransmission method and apparatus |
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| CN200910205509.9A CN102045764B (en) | 2009-10-20 | 2009-10-20 | Method and device for adaptive retransmission of high speed uplink packet access |
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| US (1) | US8902918B2 (en) |
| EP (1) | EP2493107B1 (en) |
| CN (1) | CN102045764B (en) |
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Also Published As
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| CN102045764B (en) | 2014-02-19 |
| WO2011047606A1 (en) | 2011-04-28 |
| US20120201121A1 (en) | 2012-08-09 |
| EP2493107A1 (en) | 2012-08-29 |
| EP2493107A4 (en) | 2012-09-26 |
| EP2493107B1 (en) | 2017-12-20 |
| US8902918B2 (en) | 2014-12-02 |
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